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Electronics Worksheet: Series and Parallel Resistors

Electronics lesson 14: Resistors in series and parallel · Set 92 · 40 questions
TalentJR

Remember (Add in a row, share side by side): Series: R total = R1 + R2 + R3 … Parallel, equal resistors: R total = R ÷ number of resistors (two equal → half). Then I = V ÷ R total. Example: 6 V across 4 Ω + 8 Ω = 12 Ω → 0.5 A.

NameDateTime takenScore ___ / 40
  1. 1.🧮 A 1 V battery is joined to 2 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  2. 2.🧮 Two equal 220 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  3. 3.🧮 Four equal 400 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  4. 4.🧮 Two resistors in parallel give a total that is … (a) more than either one (b) always zero (c) less than either one (d) their sum
  5. 5.🧮 A 330 Ω resistor is joined in series with two equal 1000 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  6. 6.🧮 An 18 V battery is joined to 8 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  7. 7.🧮 Adding another resistor in series makes the total resistance … (a) smaller (b) bigger (c) zero (d) stay the same
  8. 8.🧮 Five equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  9. 9.🧮 Resistors of 50 Ω and 10 Ω are joined in series. What is the total resistance (in ohms)?
  10. 10.🧮 Four equal 80 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  11. 11.🧮 A 20 V battery is joined to 8 Ω and 12 Ω resistors in series. What current flows (in amperes)? =
  12. 12.🧮 Resistors of 33 Ω and 220 Ω are joined in series. What is the total resistance (in ohms)?
  13. 13.🧮 Resistors of 470 Ω, 220 Ω, 470 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?
  14. 14.🧮 A 33 Ω resistor is joined in series with two equal 50 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  15. 15.🧮 Resistors of 220 Ω, 50 Ω and 47 Ω are joined in series. What is the total resistance (in ohms)?
  16. 16.🧮 A 68 Ω resistor is joined in series with two equal 10 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  17. 17.🧮 A 68 Ω resistor is joined in series with two equal 200 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  18. 18.🧮 A 33 Ω resistor is joined in series with two equal 200 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  19. 19.🧮 Resistors of 100 Ω, 100 Ω, 50 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  20. 20.🧮 Two equal 50 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  21. 21.🧮 Two equal 1000 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  22. 22.🧮 Resistors of 47 Ω, 470 Ω and 20 Ω are joined in series. What is the total resistance (in ohms)?
  23. 23.🧮 Two equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  24. 24.🧮 A 2 V battery is joined to 2 Ω and 8 Ω resistors in series. What current flows (in amperes)? =
  25. 25.🧮 A 2.5 V battery is joined to 8 Ω and 2 Ω resistors in series. What current flows (in amperes)? =
  26. 26.🧮 A 20 Ω resistor is joined in series with two equal 40 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  27. 27.🧮 Five equal 500 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  28. 28.🧮 A 22 Ω resistor is joined in series with two equal 220 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  29. 29.🧮 Resistors of 22 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  30. 30.🧮 A 14 V battery is joined to 8 Ω and 6 Ω resistors in series. What current flows (in amperes)? =
  31. 31.🧮 A 50 Ω resistor is joined in series with two equal 330 Ω resistors that are in parallel with each other. What is the total resistance (in ohms)?
  32. 32.🧮 Two equal 330 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  33. 33.🧮 Three equal 30 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  34. 34.🧮 Resistors of 68 Ω, 20 Ω, 10 Ω and 33 Ω are joined in series. What is the total resistance (in ohms)?
  35. 35.🧮 Two equal 470 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  36. 36.🧮 A 13 V battery is joined to 3 Ω and 10 Ω resistors in series. What current flows (in amperes)? =
  37. 37.🧮 Resistors of 10 Ω and 330 Ω are joined in series. What is the total resistance (in ohms)?
  38. 38.🧮 Three equal 300 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  39. 39.🧮 Four equal 100 Ω resistors are joined in parallel. What is the total resistance (in ohms)?
  40. 40.🧮 Resistors of 470 Ω, 330 Ω and 50 Ω are joined in series. What is the total resistance (in ohms)?

Answer key

  1. 0.25
  2. 110
  3. 100
  4. less than either one
  5. 830
  6. 1
  7. bigger
  8. 20
  9. 60
  10. 20
  11. 1
  12. 253
  13. 1210
  14. 58
  15. 317
  16. 73
  17. 168
  18. 133
  19. 580
  20. 25
  21. 500
  22. 537
  23. 50
  24. 0.2
  25. 0.25
  26. 40
  27. 100
  28. 132
  29. 55
  30. 1
  31. 215
  32. 165
  33. 10
  34. 131
  35. 235
  36. 1
  37. 340
  38. 100
  39. 25
  40. 850

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